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Simple Circuits/ Insulators and Conductors

Total questions: 26

Worksheet time: 25mins

Name
Class
Date
1.
A material that lets electricity pass through it is called ...
a)
an electrical conductor
b)
an electrical insulator
c)
an electrical appliance
2.
A material that does NOT let electricity pass through it is called ...
a)
an electrical conductor
b)
an electrical insulator
c)
an electrical appliance
3.
Which of the following materials is an electrical insulator?
a)
aluminum
b)
gold
c)
rubber
d)
steel
4.
Why is electrical wiring usually made from copper?
a)
Because copper is shiny
b)
Because copper conducts electricity
c)
Because copper is not magnetic
5.
Why is electrical wiring usually covered with a layer of plastic?
a)
To help electricity flow along the wire
b)
To make it look pretty
c)
To make it safe
6.
Rubber
a)
Insulator
b)
Conductor 
7.
Gold
a)
Insulator
b)
Conductor 
8.

What do you need for a simple circuit?

a)

battery, bulb, string

b)

bulb, wire, holder

c)

paper clip, wire, battery

d)

battery, bulb, wire

9.

Look at the incomplete circuit diagram below. Which of the following best completes this circuit?

a)

wooden toothpick

b)

plastic straw

c)

rubber band

d)

metal nail

10.

The picture below shows a circuit with two light bulbs that are currently lit up. The switch is closed. What will happen to the light bulbs if the switch opens?

a)

Both light bulbs will turn off.

b)

Both light bulbs will stay on.

c)

The top light bulb will turn off and the bottom light bulb will stay on.

d)

The bottom light bulb will turn off and the top light bulb will stay on.

11.

Which of these best describes why many electrical wires have plastic coatings on them?

a)

Plastic conducts electricity, so it helps the electricity flow through the wire.

b)

Plastic does not conduct electricity, so it helps the electricity flow through the wire.

c)

Plastic conducts electricity, so it keeps a person from getting shocked when handling the wire.

d)

Plastic does not conduct electricity, so it keeps a person from getting shocked when handling the wire.

12.

A ladder made of which material would be the most dangerous to use if someone were working around power lines?

a)

fiberglass

b)

metal

c)

plastic

d)

wood

13.

A student tested different items to determine which items conduct electricity. Which list below includes only items that do NOT conduct electricity?

a)

rubber eraser, glass rod, plastic button

b)

copper wire, glass rod, steel paper clip

c)

steel paper clip, plastic button, glass rod

d)

rubber eraser, plastic button, copper wire

14.

Ms. Davis is an electrician, she uses various tools for her work. Why is it important for Ms. Davis' tools to have plastic or rubber handles?

a)

Plastic and rubber are insulators.

b)

Plastic and rubber are great conductors.

c)

Plastic and rubber are more durable and last longer.

d)

Plastic and rubber provide a better grip for the handle.

15.
A battery or other device which provides energy for a circuit
a)
Conductor
b)
Power source
c)
Parallel circuit
d)
Complete circuit
16.
Switch
a)
The part of a circuit which can control whether electricity flows
b)
An electrical force which occurs as electrons are built up in an object
c)
A small device that stores energy in a chemical form
d)
The area of a conductor through which a current is able to move
17.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
18.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
19.
If the lights are on, the circuit is
a)
closed
b)
open
20.
A/an _____________ circuit has a break and the bulb will not light up.
a)
closed
b)
short
c)
open
21.
Which of the following provides stored energy to run the circuit?
a)
Battery
b)
Light Bulb
c)
Switch
d)
Wire
22.

Which of the following always has a negative charge?

a)

a proton a proton

b)

an electron

c)

a battery a battery

d)

all of the above

23.

Which of these is a closed circuit?

a)

b)

c)

24.
Which statement is true?
a)
The light bulb will light up because the  circuit is complete.
b)
The light bulb will light up because the  circuit is broken.
c)
The light bulb will not light up because the  circuit is complete.
d)
The light bulb will not light up because the  circuit is broken.
25.
Will the light bulb in this circuit light and why/why not?
a)
yes, because it has two batteries
b)
no, because the switch is open
c)
yes, because it is in a circuit
d)
no, because the bulb is burned out
26.
Choose the corrrect sentence.
a)
This circuit will work because it is an open circuit
b)
This circuit will work because it is a closed circuit.
c)
This circuit will NOT work because it is an open circuit.
d)
This circuit will NOT work because it is a closed circuit.

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